Castaldo® White Label® Mold Rubber- Strips, 5 lbs.

Castaldo® White Label® is a durable, natural mold rubber that is firmer of the two grades and has a high concentration of pure natural gum rubber, which makes it resilient and pliable; characteristics that will enhance your mold-making process.  Castaldo® White Label® is ideal for flat pieces and those that require a stiffer/harder mold. Castaldo® natural organic mold rubbers require a release agent.  Castaldo Jewellery Natural Molding Rubber has been the industry standard for more than 40 years and continues to be the best jewelry molding rubber available for lost wax jewelry casting.  Supplied in convenient pre-cut strips which makes it easy to cut and use.  Also available in a 5 lb convenient roll.  Made in Thailand

Specifications:

Dimensions :   18"L x 2.875"D (Strips)

Weight:                   5 lbs / 2.27kg

Vulcanization Temperature: 307°F (153°C)

Rubber Shrinkage: 2.3%

Vulcanization Time: 15-30 Minutes (Depending on Mold Thickness)